Why is it important to chew your food? Can you guess how long it takes for food to travel through your body? Could you possibly have twenty feet of small intestines? Where does that bad-smelling gas come from? Your digestive system is out of sight and out of mind -- until things don't go right. Then you may wonder how these important organs work! You'll find the answers in Seymour Simon's smooth, well-organized, and fascinating introduction to the...

Describes the anatomy of the eye and ear, how those organs function and some ways in which they may malfunction, and how the brain is also involved in our seeing and hearing.